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[SECURITY] [DSA 4172-1] perl security update

Posted on 14 April 2018
Debian Security Advisory

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Debian Security Advisory DSA-4172-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
April 14, 2018 https://www.debian.org/security/faq
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Package : perl
CVE ID : CVE-2018-6797 CVE-2018-6798 CVE-2018-6913

Multiple vulnerabilities were discovered in the implementation of the
Perl programming language. The Common Vulnerabilities and Exposures
project identifies the following problems:


Brian Carpenter reported that a crafted regular expression
could cause a heap buffer write overflow, with control over the
bytes written.


Nguyen Duc Manh reported that matching a crafted locale dependent
regular expression could cause a heap buffer read overflow and
potentially information disclosure.


GwanYeong Kim reported that 'pack()' could cause a heap buffer write
overflow with a large item count.

For the oldstable distribution (jessie), these problems have been fixed
in version 5.20.2-3+deb8u10. The oldstable distribution (jessie) update
contains only a fix for CVE-2018-6913.

For the stable distribution (stretch), these problems have been fixed in
version 5.24.1-3+deb9u3.

We recommend that you upgrade your perl packages.

For the detailed security status of perl please refer to its security
tracker page at:

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org